Material Safety Data Sheet of Styrene Monomer

1. S SI IL LV VE ER R F FE ER RN N C CH HE EM MI IC CA AL L M Ma at te er ri ia al l S Sa af fe et ty y D Da at ta a S Sh he ee et t Styrene Monomer, Stabilized SECTION 1: IDENTIFICATION Product Name: Styrene Monomer, Stabilized CAS Number: 100-42-5 Chemical Name: C6H5CH:CH2 Synonyms: Styrene Monomer; Vinylbenzene; Phenylethylene; Styrol; Cinnamene; Ethenylbenzene Company Silver Fern Chemical, Inc. 2226 Queen Anne Avenue North Suite #C Seattle WA 98109, USA Business Contact Customer Service: 206-282-3376 info@silverfernchemical.com 24 Hour Emergency Contact Infotrac 800-535-5053 Outside USA & Canada 352-323-3500 SECTION 2: HAZARD IDENTIFICATION Emergency Overview -------------------------- DANGER! FLAMMABLE LIQUID AND VAPOR. HARMFUL IF SWALLOWED, INHALED OR ABSORBED THROUGH SKIN. CAUSES IRRITATION TO SKIN, EYES AND RESPIRATORY TRACT. AFFECTS CENTRAL NERVOUS SYSTEM, LIVER AND REPRODUCTIVE SYSTEM. SAF-T-DATA(tm) Ratings (Provided here for your convenience) ----------------------------------------------------------------------------------------------------------- Health Rating: 3 - Severe (Cancer Causing) Flammability Rating: 2 - Moderate Reactivity Rating: 2 - Moderate Contact Rating: 2 - Moderate (Life) Lab Protective Equip: GOGGLES & SHIELD; LAB COAT & APRON; VENT HOOD; PROPER GLOVES; CLASS B EXTINGUISHER Storage Color Code: Red (Flammable) ----------------------------------------------------------------------------------------------------------- _________________________________________________________________________________________________________________________ Effective Date: January 7, 2007 Page 1 of 11

2. S SI IL LV VE ER R F FE ER RN N C CH HE EM MI IC CA AL L M Ma at te er ri ia al l S Sa af fe et ty y D Da at ta a S Sh he ee et t Styrene Monomer, Stabilized Potential Health Effects ---------------------------------- Inhalation: Causes irritation to the respiratory tract. Symptoms may include coughing, shortness of breath. A central nervous system depressant. Higher exposures can cause a build-up of fluid in the lungs (pulmonary edema), a medical emergency. Ingestion: May cause irritation to the gastrointestinal tract. Symptoms may include nausea, vomiting and diarrhea. May cause central nervous system depression. Symptoms may include lethargy, drowsiness, staggering and sleepiness. May cause possible convulsions and risk of pulmonary edema. Skin Contact: Causes irritation to skin. Symptoms include redness, itching, and pain. May produce blisters. May be absorbed through the skin. Eye Contact: May cause irritation, redness, pain, and corneal damage. Chronic Exposure: Repeated exposure may cause nausea, vomiting, appetite loss, a sensation of drunkenness, general weakness, and functional disorders of the nervous system and liver. May cause dermatitis. Women may experience ovulation and menstrual disorders. May cause mutagenic and teratogenic effects. Aggravation of Pre-existing Conditions: Persons with pre-existing skin disorders, eye problems, liver disease, central nervous system disorders, or impaired respiratory function may be more susceptible to the effects of the substance. SECTION 3: COMPOSITION / INFORMATION ON INGREDIENTS Ingredient CAS No Percent Hazardous --------------------------------------- ------------ ------------ --------- Styrene 100-42-5 90 - 100% Yes _________________________________________________________________________________________________________________________ Effective Date: January 7, 2007 Page 2 of 11

3. S SI IL LV VE ER R F FE ER RN N C CH HE EM MI IC CA AL L M Ma at te er ri ia al l S Sa af fe et ty y D Da at ta a S Sh he ee et t Styrene Monomer, Stabilized SECTION 4: FIRST AID MEASURES Inhalation: Remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical attention. Ingestion: Do NOT induce vomiting. Give large amounts of water. Never give anything by mouth to an unconscious person. Get medical attention. Skin Contact: Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical attention. Wash clothing before reuse. Thoroughly clean shoes before reuse. Eye Contact: Immediately flush eyes with plenty of water for at least 15 minutes, lifting lower and upper eyelids occasionally. Get medical attention immediately. SECTION 5: FIRE FIGHTING MEASURES Fire: Flash point: 31C (88F) CC Autoignition temperature: 490C (914F) Flammable limits in air % by volume: lel: 0.9; uel: 6.8 Flammable Liquid and Vapor! May accumulate static electricity. Contact with strong oxidizers may cause fire. Explosion: Sealed containers may rupture when heated. Above the flash point, explosive vapor-air mixtures may be formed. Vapors can flow along surfaces to distant ignition source and flash back. Sensitive to static discharge. Fire Extinguishing Media: Water spray, dry chemical, alcohol foam, or carbon dioxide. Material floats on water and may travel back to an ignition source and spread fire. Water spray may be used to keep fire exposed containers _________________________________________________________________________________________________________________________ Effective Date: January 7, 2007 Page 3 of 11

4. S SI IL LV VE ER R F FE ER RN N C CH HE EM MI IC CA AL L M Ma at te er ri ia al l S Sa af fe et ty y D Da at ta a S Sh he ee et t Styrene Monomer, Stabilized cool. Do not allow water runoff to enter sewers or waterways. Special Information: In the event of a fire, wear full protective clothing and NIOSH-approved self-contained breathing apparatus with full facepiece operated in the pressure demand or other positive pressure mode. SECTION 6: ACCIDENTAL RELEASE MEASURES Ventilate area of leak or spill. Remove all sources of ignition. Wear appropriate personal protective equipment as specified in Section 8. Isolate hazard area. Keep unnecessary and unprotected personnel from entering. Contain and recover liquid when possible. Use non-sparking tools and equipment. Collect liquid in an appropriate container or absorb with an inert material (e. g., vermiculite, dry sand, earth), and place in a chemical waste container. Do not use combustible materials, such as saw dust. Do not flush to sewer! If a leak or spill has not ignited, use water spray to disperse the vapors, to protect personnel attempting to stop leak, and to flush spills away from exposures. US Regulations (CERCLA) require reporting spills and releases to soil, water and air in excess of reportable quantities. The toll free number for the US Coast Guard National Response Center is (800) 424-8802. SECTION 7: HANDLING AND STORAGE Protect against physical damage. Store in a cool, dry well-ventilated location, away from any area where the fire hazard may be acute. Outside or detached storage is preferred. Separate from incompatibles. Containers should be bonded and grounded for transfers to avoid static sparks. Storage and use areas should be No Smoking areas. Use non-sparking type tools and equipment, including explosion proof ventilation. This material is corrosive to copper and copper alloys. Isolate from incompatible substances. Containers of this material may be hazardous when empty since they retain product residues (vapors, liquid); observe all warnings and precautions listed for the product. Do Not attempt to clean empty containers since residue is difficult to remove. Do not pressurize, cut, weld, braze, solder, drill, grind or expose such containers to heat, sparks, flame, static electricity or other sources of ignition: they may explode and cause injury or death. SECTION 8: EXPOSURE CONTROLS AND PERSONAL PROTECTION _________________________________________________________________________________________________________________________ Effective Date: January 7, 2007 Page 4 of 11

5. S SI IL LV VE ER R F FE ER RN N C CH HE EM MI IC CA AL L M Ma at te er ri ia al l S Sa af fe et ty y D Da at ta a S Sh he ee et t Styrene Monomer, Stabilized Airborne Exposure Limits: Styrene, monomer: - OSHA Permisible Exposure Limit (PEL) - 100 ppm (TWA), 200 ppm (Ceiling), 600 ppm (Max. Conc.: 5-minute max. peak in any 3 hours) - ACGIH Threshold Limit Value (TLV) - 20 ppm (TWA), 40 ppm (STEL), A4 - not classifiable as a human carcinogen. Ventilation System: A system of local and/or general exhaust is recommended to keep employee exposures below the Airborne Exposure Limits. Local exhaust ventilation is generally preferred because it can control the emissions of the contaminant at its source, preventing dispersion of it into the general work area. Please refer to the ACGIH document, Industrial Ventilation, A Manual of Recommended Practices, most recent edition, for details. Personal Respirators (NIOSH Approved): If the exposure limit is exceeded, a half-face organic vapor respirator may be worn for up to ten times the exposure limit or the maximum use concentration specified by the appropriate regulatory agency or respirator supplier, whichever is lowest. A full-face piece organic vapor respirator may be worn up to 50 times the exposure limit or the maximum use concentration specified by the appropriate regulatory agency or respirator supplier, whichever is lowest. For emergencies or instances where the exposure levels are not known, use a full-face piece positive-pressure, air-supplied respirator. WARNING: Air-purifying respirators do not protect workers in oxygen-deficient atmospheres. Skin Protection: Wear impervious protective clothing, including boots, gloves, lab coat, apron or coveralls, as appropriate, to prevent skin contact. Eye Protection: Use chemical safety goggles and/or a full face shield where splashing is possible. Maintain eye wash fountain and quick-drench facilities in work area. SECTION 9: PHYSICAL AND CHEMICAL PROPERTIES Appearance: Colorless to yellow oily liquid. Odor: _________________________________________________________________________________________________________________________ Effective Date: January 7, 2007 Page 5 of 11

6. S SI IL LV VE ER R F FE ER RN N C CH HE EM MI IC CA AL L M Ma at te er ri ia al l S Sa af fe et ty y D Da at ta a S Sh he ee et t Styrene Monomer, Stabilized Penetrating odor. Solubility: Negligible (< 0.1%) Density: 0.9059 @ 20C pH: No information found. % Volatiles by volume @ 21C (70F): 100 Boiling Point: 145 - 146C (293 - 295F) Melting Point: - 30.6C (-24F) Vapor Density (Air=1): 3.6 Vapor Pressure (mm Hg): 5 @ 20C (68F) Evaporation Rate (BuAc=1): No information found. SECTION 10: STABILITY AND REACTIVITY Stability: Stabilized styrene (styrene with polymerization inhibitor). Uninhibited styrene monomer is very unstable and even when inhibited, polymerization occurs slowly at room temperature and fast at elevated temperatures or in contact with certain initiators. Hazardous Decomposition Products: Carbon dioxide and carbon monoxide may form when heated to decomposition. Hazardous Polymerization: Polymerization may occur under fire conditions or if contaminated. Incompatibilities: For Styrene Monomer: Vapor is explosive when exposed to heat or flame; reacts with oxygen above 40C (104F) to form a heat-sensitive explosive peroxide. On exposure to light and air, styrene slowly _________________________________________________________________________________________________________________________ Effective Date: January 7, 2007 Page 6 of 11

7. S SI IL LV VE ER R F FE ER RN N C CH HE EM MI IC CA AL L M Ma at te er ri ia al l S Sa af fe et ty y D Da at ta a S Sh he ee et t Styrene Monomer, Stabilized undergoes polymerization and oxidation with formation of peroxides. Violent polymerization may be initiated by alkali metal-graphite composites, butyllithium, dibenzoyl peroxide, azoisobutyronitrile or di- tert-butyl peroxide. Styrene reacts violently with chlorosulfonic acid, oleum, sulfuric acid, chlorine + iron(II)chloride and can react vigorously with oxidizing materials. Dissolves rubber. Corrosive to copper and copper alloys. Incompatible with peroxides, aluminum chloride, strong acids, metallic salts, halogens, polymerization catalysts and accelerators. Conditions to Avoid: Heat, flame, ignition sources, air, light and incompatibles. SECTION 11: TOXICOLOGICAL INFORMATION Toxicological Data: Styrene: LD50 oral rat: 2650 mg/kg; LC50 inhalation rat: 12 gm/m3/4H. Investigated as a tumorigen, mutagen, reproductive effector. Reproductive Toxicity: See Chronic Health Hazards. --------\Cancer Lists\------------------------------------------------------ ---NTP Carcinogen--- Ingredient Known Anticipated IARC Category ------------------------------------ ----- ----------- ------------- Styrene (100-42-5) No No 2B SECTION 12: ECOLOGICAL INFORMATION Environmental Fate: When released into the soil, this material is expected to readily biodegrade. When released into the soil, this material is expected to quickly evaporate. When released into water, this material is expected to readily biodegrade. When released to water, this material is expected to quickly evaporate. When released into the air, this material is expected to be readily degraded by reaction with photochemically produced hydroxyl radicals. When released into the air, this material is expected _________________________________________________________________________________________________________________________ Effective Date: January 7, 2007 Page 7 of 11

8. S SI IL LV VE ER R F FE ER RN N C CH HE EM MI IC CA AL L M Ma at te er ri ia al l S Sa af fe et ty y D Da at ta a S Sh he ee et t Styrene Monomer, Stabilized to have a half-life of less than 1 day. Environmental Toxicity: The LC50/96-hour values for fish are between 1 and 10 mg/l. SECTION 13: DISPOSAL CONSIDERATIONS Whatever cannot be saved for recovery or recycling should be handled as hazardous waste and sent to a RCRA approved waste facility. Processing, use or contamination of this product may change the waste management options. State and local disposal regulations may differ from federal disposal regulations. Dispose of container and unused contents in accordance with federal, state and local requirements. SECTION 14: TRANSPORT INFORMATION Domestic (Land, D.O.T.) ----------------------- Proper Shipping Name: STYRENE MONOMER, STABILIZED Hazard Class: 3 UN/NA: UN2055 Packing Group: III Information reported for product/size: 20L International (Water, I.M.O.) ----------------------------- Proper Shipping Name: STYRENE MONOMER, STABILIZED Hazard Class: 3 UN/NA: UN2055 Packing Group: III Information reported for product/size: 20L _________________________________________________________________________________________________________________________ Effective Date: January 7, 2007 Page 8 of 11

9. S SI IL LV VE ER R F FE ER RN N C CH HE EM MI IC CA AL L M Ma at te er ri ia al l S Sa af fe et ty y D Da at ta a S Sh he ee et t Styrene Monomer, Stabilized International (Air, I.C.A.O.) ----------------------------- Proper Shipping Name: STYRENE MONOMER, STABILIZED Hazard Class: 3 UN/NA: UN2055 Packing Group: III Information reported for product/size: 20L This information is not intended to convey all specific regulatory or operational requirements/information relating to this product. It is the responsibility of the transporting organization to follow all applicable laws, regulations and rules relating to the transportation of the material. SECTION 15: REGULATORY INFORMATION --------\Chemical Inventory Status - Part 1\--------------------------------- Ingredient TSCA EC Japan Australia ----------------------------------------------- ---- --- ----- --------- Styrene (100-42-5) Yes Yes Yes Yes --------\Chemical Inventory Status - Part 2\--------------------------------- --Canada-- Ingredient Korea DSL NDSL Phil. ----------------------------------------------- ----- --- ---- ----- Styrene (100-42-5) Yes Yes No Yes --------\Federal, State & International Regulations - Part 1\---------------- -SARA 302- ------SARA 313------ Ingredient RQ TPQ List Chemical Catg. ----------------------------------------- --- ----- ---- -------------- Styrene (100-42-5) No No Yes No --------\Federal, State & International Regulations - Part 2\---------------- -RCRA- -TSCA- Ingredient CERCLA 261.33 8(d) ----------------------------------------- ------ ------ ------ Styrene (100-42-5) 000 No No _________________________________________________________________________________________________________________________ Effective Date: January 7, 2007 Page 9 of 11

10. S SI IL LV VE ER R F FE ER RN N C CH HE EM MI IC CA AL L M Ma at te er ri ia al l S Sa af fe et ty y D Da at ta a S Sh he ee et t Styrene Monomer, Stabilized Chemical Weapons Convention: No TSCA 12(b): Yes CDTA: No SARA 311/312: Acute: Yes Chronic: Yes Fire: Yes Pressure: No Reactivity: No (Pure / Liquid) Australian Hazchem Code: 3[Y] Poison Schedule: None allocated. WHMIS: This MSDS has been prepared according to the hazard criteria of the Controlled Products Regulations (CPR) and the MSDS contains all of the information required by the CPR. SECTION 16: OTHER INFORMATION NFPA Ratings: Health: 2 Flammability: 3 Reactivity: 2 Label Hazard Warning: DANGER! FLAMMABLE LIQUID AND VAPOR. HARMFUL IF SWALLOWED, INHALED OR ABSORBED THROUGH SKIN. CAUSES IRRITATION TO SKIN, EYES AND RESPIRATORY TRACT. AFFECTS CENTRAL NERVOUS SYSTEM, LIVER AND REPRODUCTIVE SYSTEM. Label Precautions: Keep away from heat, sparks and flame. Keep container closed. Use only with adequate ventilation. Avoid contact with eyes, skin and clothing. Wash thoroughly after handling. Avoid breathing vapor or mist. Label First Aid: If swallowed, DO NOT INDUCE VOMITING. Give large quantities of water. Never give anything by mouth to an unconscious person. If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. In case of contact, immediately flush eyes or skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. In all cases, get medical attention. Product Use: Laboratory Reagent. _________________________________________________________________________________________________________________________ Effective Date: January 7, 2007 Page 10 of 11

11. S SI IL LV VE ER R F FE ER RN N C CH HE EM MI IC CA AL L M Ma at te er ri ia al l S Sa af fe et ty y D Da at ta a S Sh he ee et t Styrene Monomer, Stabilized DISCLAIMER OF RESPONSIBILITY The information on this MSDS was obtained from sources which we believe are reliable. However, the information is provided without any warranty, expressed or implied, regarding its correctness. Some information presented and conclusions drawn herein are from sources other than direct test data on the substance itself. The conditions or methods of handling, storage, use and disposal of the product are beyond our control and may be beyond our knowledge. For this and other reasons, we do not assume responsibility and expressly disclaim liability for loss, damage, or expense arising out of or in any way connected with handling, storage, use, or disposal of this product. If the product is used as a component in another product, this MSDS information may not be applicable. _________________________________________________________________________________________________________________________ Effective Date: January 7, 2007 Page 11 of 11